| 1930-12 |
|
| 1930-12 |
December, Showa 12: Established Osaka Steel Corporation |
| 1931-12 |
|
| 1931-12 |
December, Showa 13: Merged with Yodogawa Casting Steel Co., Ltd. |
| 1937-12 |
|
| 1937-12 |
Osaka Iron & Steel Co., Ltd. established. |
| 1938-12 |
|
| 1938-12 |
Merged with Yodogawa Cast Steel Co., Ltd. |
| 1947-08 |
|
| 1947-08 |
Constructed new small section mill in Amagasaki Works to commence production of wire rods. |
| 1947-08 |
August 1947: Established a small rolling mill at Amagasaki Factory and started wire production |
| 1951-06 |
|
| 1951-06 |
Constructed new small section mill in Kyobashi Works to produce wire rods and steel bars. |
| 1951-06 |
June 1951: Established a small rolling mill at Kyobashi Factory and started production of wire and bars |
| 1951-06 |
Constructed new small section mill in Kyobashi Works to commence production of wire rods and steel bars. |
| 1955-04 |
|
| 1955-04 |
Constructed new medium section mill in Kyobashi Works to produce shape steel. |
| 1955-04 |
Constructed new medium section mill in Kyobashi Works to commence production of shape steel. |
| 1956-01 |
|
| 1956-04 |
April 1955: Established a medium-sized rolling mill at Kyobashi Factory and started production of shaped steel |
| 1957-01 |
|
| 1957-01 |
January 1960: Listed on the Osaka Securities Exchange |
| 1957-01 |
Listed stock on Osaka Stock Exchange. |
| 1960-04 |
|
| 1960-04 |
Constructed No. 1 blast furnace in Nishijima Works, located in Nishi-yodogawa-ku, Osaka. |
| 1960-04 |
April 1960: Established a blast furnace at Nishi-Shima Factory, Nishiyodogawa-ku, Osaka |
| 1960-11 |
November 1968: Relocated headquarters to 8 Umeda-cho, Kita-ku, Osaka (Sei-Han-Shin Building) |
| 1961-10 |
|
| 1961-10 |
October 1961: Listed on the Tokyo and Nagoya Securities Exchanges |
| 1961-10 |
Listed stock on Tokyo and Nagoya Stock Exchanges. |
| 1963-11 |
|
| 1964-08 |
|
| 1964-11 |
|
| 1964-11 |
November 1964: Built two converter furnaces at Nishi-Shima Factory |
| 1964-11 |
Constructed two new converters in Nishijima Works. |
| 1968-11 |
Constructed No. 2 blast furnace in Nishijima Works. No. 1 blast furnace ceased operation. |
| 1968-11 |
Moved head office to Umeda-cho 8, Kita-ku, Osaka (Nishi-hanshin Building). |
| 1969-08 |
|
| 1969-08 |
August 1969: Installed a second blast furnace at Nishi-Shima Factory, halting the first |
| 1969-08 |
Constructed No. 2 blast furnace in Nishijima Works. No. 1 blast furnace ceased operation. |
| 1970-06 |
June 1977: Merged with Otani Heavy Industries Co., Ltd., renamed to Godo Steel Co., Ltd., forming three manufacturing sites in Osaka, Tokyo, and Amagasaki |
| 1972-04 |
April 1978: Merged with Japan Sand Iron Steel Co., Ltd. and Koto Steel Co., Ltd., adding Himeji Manufacturing Plant to create four manufacturing sites |
| 1972-06 |
|
| 1972-08 |
|
| 1972-08 |
August 1972: Established a continuous casting facility at Nishi-Shima Manufacturing Plant |
| 1972-08 |
Constructed No.1 continuous casting machine in Nishijima Works. |
| 1977-06 |
Steel producing bases were organized into three: Osaka, Tokyo and Amagasaki Works. |
| 1977-06 |
Merged with Otani Jukogyo Co., Ltd.; changed company name to Godo Steel, Ltd.; Steel producing bases were organized into three: Osaka, Tokyo and Amagasaki Works. |
| 1977-08 |
|
| 1978-04 |
Established Himeji Works as the fourth steel producing base. |
| 1978-04 |
Merged with Japan Iron‐Sand Steel Co., Ltd. and Koto Seiko Co., Ltd. to establish Himeji Works as the fourth steel producing base. |
| 1980-03 |
|
| 1980-03 |
Closed Amagasaki Works. |
| 1982-02 |
|
| 1982-02 |
|
| 1982-02 |
February 1982: Installed a second continuous casting facility at Osaka Manufacturing Plant |
| 1982-02 |
Constructed No. 2 continuous casting machine in Osaka Works. |
| 1982-03 |
March 1980: Closed Amagasaki Manufacturing Plant |
| 1982-04 |
Replaced wire rod rolling mill in Osaka Works with new mill. |
| 1982-04 |
April 1982: Updated wire rolling equipment at Osaka Manufacturing Plant |
| 1984-03 |
|
| 1984-03 |
|
| 1984-03 |
|
| 1984-03 |
March 1984: Closed Tokyo Manufacturing Plant |
| 1984-03 |
Constructed new 70 ton electric furnace in Osaka Works. |
| 1984-03 |
Closed Tokyo Works. |
| 1984-04 |
|
| 1984-12 |
|
| 1984-12 |
Constructed new 70-ton electric furnace and No. 3 continuous casting machine in Osaka Works. |
| 1984-12 |
December 1984: Installed a 70-ton electric furnace at Osaka Manufacturing Plant |
| 1984-12 |
Constructed No. 3 continuous casting machine in Osaka Works. |
| 1991-04 |
|
| 1991-04 |
Steel production bases were integrated into three: Osaka, Himeji, and Funabashi Works. |
| 1991-04 |
April 1998: Merged with Funabashi Steel Co., Ltd., forming three manufacturing sites in Osaka, Himeji, and Funabashi |
| 1991-04 |
Merged with Funabashi Seiko Co., Ltd. to integrate steel production bases into three: Osaka, Himeji and Funabashi Works. |
| 1994-09 |
|
| 1994-09 |
|
| 1994-09 |
No. 2 blast furnace in Osaka Works ceased operation. |
| 1998-07 |
|
| 1998-07 |
|
| 1998-07 |
Moved head office to Nishijima, Nishiyodogawa-ku, Osaka. |
| 1998-09 |
|
| 1998-09 |
September 1998: Halved the second blast furnace at Osaka Manufacturing Plant |
| 1998-09 |
Three Works obtained ISO9001 certification. |
| 1999-07 |
July 1998: Relocated headquarters to Nishijima, Nishiyodogawa-ku, Osaka |
| 2000-09 |
|
| 2000-09 |
Ceased operating steel bar production line in Osaka Works. |
| 2001-07 |
|
| 2001-07 |
|
| 2001-07 |
July 2001: Relocated headquarters to Dojima Hama, Kita-ku, Osaka City (Toyobo Building) |
| 2001-07 |
Moved head office to Dojimahama, Kita-ku, Osaka (Toyobo Building). |
| 2002-02 |
|
| 2002-02 |
Cooperative sales company jointly with Tokyo Tekko Co., Ltd. |
| 2002-02 |
February 2002: Established Tokyo Steel and joint sales company Tokyo Devers Steel |
| 2002-02 |
Established cooperative sales company, Tokyo D・B Steel Co., Ltd. jointly with Tokyo Tekko Co., Ltd. |
| 2003-11 |
|
| 2003-11 |
|
| 2003-11 |
|
| 2003-11 |
November 2003: Established Metal Stock Co., Ltd. |
| 2003-11 |
Established Metal Stock Co., Ltd. |
| 2003-11 |
Three Works obtained ISO14001 certification. |
| 2004-09 |
|
| 2004-09 |
|
| 2004-09 |
September 2004: Business alliance with Sankoh Steel Corporation |
| 2004-09 |
Formed business alliance with Sanko Seiko Co., Ltd. |
| 2007-03 |
|
| 2007-03 |
Replaced rolling mill in Funabashi Works with new mill. |
| 2007-06 |
|
| 2007-06 |
Became affiliated company, accounted for by equity method. |
| 2007-06 |
June 2007: Strengthened alliance with Nippon Steel Corporation (now Nippon Steel & Sumitomo Metal Corporation), becoming an affiliated company |
| 2007-06 |
Strengthened collaboration with Nippon Steel Corporation; became its affiliated company, accounted for by equity method. |
| 2007-07 |
|
| 2007-07 |
|
| 2007-07 |
July 2007: Moved Tokyo sales office to Marunouchi, Chiyoda-ku, Tokyo |
| 2007-07 |
Moved Tokyo Office to Marunouchi, Chiyoda-ku, Tokyo. |
| 2007-08 |
|
| 2007-08 |
August 2007: Cross-shareholding with Kyoei Steel Corporation |
| 2007-12 |
|
| 2007-12 |
Majority owned subsidiary. |
| 2007-12 |
December 2007: Acquired shares of Samsung Metal Industries Co., Ltd. (became a subsidiary) |
| 2007-12 |
Acquired shares of Mitsuboshi Metal Industry Co., Ltd. (as a majority owned subsidiary). |
| 2010-07 |
|
| 2010-07 |
Tokyo D・B Steel Co., Ltd. - dissolution. |
| 2010-08 |
|
| 2010-08 |
Constructed new direct rolling (DR) in Funabashi Works. |
| 2010-09 |
|
| 2010-09 |
September 2010: Ceased operation at Osaka Manufacturing Plant Bar Steel Factory |
| 2013-07 |
|
| 2013-07 |
July 2013: Dissolution of Tokyo Devers Steel Co., Ltd. |
| 2015-06 |
|
| 2015-06 |
Reinforcement and completion of the auditor system. |
| 2015-06 |
June 2015: Introduced executive officer system, enhanced and strengthened audit (role) system |
| 2015-06 |
Introduction of executive officer system; Reinforcement and completion of the auditor system. |
| 2015-07 |
|
| 2015-07 |
|
| 2015-07 |
July 2015: Fully acquired Samsung Metal Industries Co., Ltd., a consolidated subsidiary |
| 2015-07 |
Consolidated subsidiary Mitsuboshi Metal Industry Co., Ltd. became complete subsidiary. |
| 2016-03 |
|
| 2016-03 |
|
| 2016-03 |
March 2016: Fully acquired Tokaikai Co., Ltd. |
| 2016-03 |
TOKAI STEEL CORPORATION became complete subsidiary. |
| 2019-03 |
|
| 2019-03 |
By tender offer. |
| 2019-03 |
March 2019: Made Asahi Industrial Co., Ltd. a consolidated subsidiary through a tender offer |
| 2019-03 |
Asahi Industries Co., Ltd. became a consolidated subsidiary by tender offer. |
| 2019-10 |
Jointly with Asahi Industries Co., Ltd. |
| 2019-10 |
October 2019: Established Kanto Devers Steel Co., Ltd. jointly with Asahi Industrial Co., Ltd. |
| 2019-10 |
Established cooperative sales company, Kanto D-Bar Steel Corporation, jointly with Asahi Industries Co., Ltd. |
| 2022-08 |
August 2022: Established new direct rolling (DR) equipment at Funabashi Manufacturing Plant |
| 2023-12 |
|
| 2024-06 |
|
| 2024-12 |
(JP Tower Osaka) |
| 2024-12 |
December 2024: Relocated headquarters to Umeda, Kita-ku, Osaka (JP Tower Osaka) |
| 2024-12 |
Moved head office to Umeda, Kita-ku, Osaka (JP Tower Osaka). |
| 2025-06 |
|
| 2025-06 |
June 2025: Fully acquired Goudou Devers Engineering Co., Ltd. |
| 2025-06 |
Godo D-Bar Engineering Corporation became complete subsidiary. |
